Welding table



7 April 15,1930. YH.SCHMUCKLER Q v WELDING TABLE Filed Nov. 10, 1928 Patented Apr. 15, 1930 UNITED STATES PATENT OFFICE ms scnnucxnmy or 3mm, Grimm wnnm'ne drums Application fled Hovember '10,- imam n. 318,512, andln damnin s, 1927.-

The invention relates to means for the mass production of structural members of similar type which areintende'd to be formed .from separate parts, such as rders, beams, .stays,

5 iron sections or the likefi y welding, and completing. Structural members of this kind such. as lattice-work, masts, tie beams, girders amount of hand labour which increases the cost. i

According to the present invention a substantial reduction in the cost of production of structural materials of similar type is effected by the employment of electrical or autogenous welding, thewelding being employed to replace the .hitherto usual riveting, in such places where welding ofiers economic advantages over. riveting." These conditions exist particularly whenthe production of I structural members of similar type is in quasi,

tion. The superiority of welding over r1ve't- 'ing in 'respectof saving time and labour con- -2 sists mainlyin that, in the case of riveting, a considerable amount of work especially in drilling the rivet holes has to be done on the individual parts of-the structural member; The drilling entails very careful marking out beforehand .in'j'order to prevent subsequent defects in the riveting. In the case'of weldin'g however, this considerable preliminary work is dispensed with, and all thatis necessary is to assemble'the parts correctly at .the

moment the welding is to be performed where-' upon the union by welding can be effected.

without further trouble. v

.Hence, if the advantages of welding are to be fully utilized, there must be nobindingthe parts together by binding screws prior to welding, smce that would result'in the disappearance of the 'advantage'afiorde'd by Weldingincomparison with riveting. The-- welding together oithe parts must therefore be effected without any preliminary work and on the other hand this'must-be done in such a manner that the parts fit together properly.

To enable this to be accomp1ishe'd', accordo ingto the invention, a'ba'seplate acting as -a template must first-be made on-which the po-.

'canprocee'd without any-further preliminary sition of the structural member under consideration, such as the one half of a lattice-work mast, ismarked, either direct or on a paper overlay. This baseplate is then fitted with. stops of anyki'nd, whichare so located that at least two of them are adapted to hold a part, aslfor example, an iron section, in the and the like have hitherto been producedin.- f the usual way by riveting, but this method.

10 of construction entails a relatively large be effected in, as it were, a-continuous mana nerby uniting the several parts. All that is necessary is to lay the suitably shaped parts on the template provided with the stops which latter hold each part in position. Hence two abutting parts lie in such a position that the welding joint is ready at onceand the welding work. a p

It is evident that this method of production fully utilizes the advantages afforded by' weldin in comparison with riveting because apart om trimming the various parts .to shape, all preliminary work is dis ensed with. This method of production can, 0 course, also be selected in the production of individual structural members and the larger the num-' ber of similar parts to be made'the the advantage of this method of workmg.

eater I The stops may be of various form's a'nd may .80

consist of-s ikes, screws or blocks, and these:

again may 'e'secured to the template base plate in various ways. A plate provided with. guide slots=may also beused.

- Several embodiments ofthe baseplate are illustrated in the drawings. Figure 1 shews' the baseplate supporting a latticeworkmast, Figure 2 with a-roof principal and Figures 3 and"; shew details of. the baseplate on a larger scale. 1

The articles to be roduced' a lattice-work m'ast' Figure '13 for example, roof prlncl- P v g r 2) or other structures are 'markedout size on the baseplate 'a, serv-.

ing as a'template, or, on occasion, on-a piece of'dra'wing paper laid thereon. The various parts of the structure such as girders b, stays c or the like, are then secured on the baseplate by means of stops (I, bl k f g, or the like. in sucha manner that for a large numb f 1.":

similar structures to be made the corresponding stays or the like are always laid between said stops or are secured by means of the blocks in order to be held in their proper po- 5 sition for assemblin whereu 11 they can be welded without an oles havlng to be drilled in the same. In t e case, for exam 1e, of a wooden baseplate, the stops (1, e or locks f, g may be provided with fastening means (for 1; example, conical suitable for each article to be produced. A r the device has been used for a given article, the holes can be filled up, for example with wooden spiles, or left open for subsequent use.

15 In the case of an iron baseplate on the other hand, it is advisable to provide slots h at suitable intervals beforehand in which the stops (1, e or securing screws of the blocks f, 9 can be shifted so that any desired construction can easily be secured. It is immaterial whether the slots h are cut directly in the baseplate (Figure 3) or slides 70, provided with the slots h, are displaceably mounted on the baseplate (Figure 4). In the drawings, the slides move, for example in slots 71 inthe late.

In t is manner, all that is needed is to trim all the rods requlred for a welded structure to the proper length, and to assemble and weld them together to form the desired structure without any other treatment such as drilling holes or temporary bolting together.

What I claim is v 1. A welding table consistin of a flat surface having transversely space apart parallel slots and beyond the slots a plurality of apertures, and means for holding a plurality of bars in abuttin engagement with each other, whereby said liars may be joined by welding to constitute a frame.

2. A welding table comprising a flat metallic table top having slots, removable and adjustable means for detachable engagement with the slots, said means associatin structural units with the table and with eac other,

whereby the overl members of a unit may be positioned and old in engagement to be associated by welding.

3. The comblnation with a welding table 9 having a lurality of parallel slots therethrough, plaeeable means for adjustably connecting lo 'tudinall grooved bars to the surface of table, chimps adjustable in the grooves of the bars, substantially as shown, whereby structural units may be held in position for welding upon the surface. of the table.

I In testimony whereof he aflix'es his signa- -HANS SCHMUCKLEB. 

